(National Geographic) Two people in South Florida are the first to contract a debilitating mosquito-borne disease called chikungunya within the continental United States.
The disease, which causes severe joint pain but is rarely lethal, has spread rapidly throughout the Caribbean in recent months. Of the previous 234 cases reported in the continental U.S., all were in people who got mosquito bites while traveling. (Related: "Mosquitoes Carry Painful Chikungunya Disease to Americas.")
The two people, one in Miami and one in Palm Beach County, had not traveled before getting sick, according to the Florida Department of Health.
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